Aion, the god of time, stands turning the wheel of heaven inscribed with the signs of the zodiac. The god was identified with both Khronos (Time) and Ouranos (Heaven).
Beneath him reclines Gaia (Mother Earth) attended by the four Karpoi (Fruits) of the seasons - from left to right: Eiar (Spring), Theron (Summer), Phthinoporon (Autumn) and Kheimon (Winter).